CN108852504B - Radio frequency electrode, radio frequency treatment equipment and output transmission line thereof - Google Patents
Radio frequency electrode, radio frequency treatment equipment and output transmission line thereof Download PDFInfo
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- CN108852504B CN108852504B CN201810812672.0A CN201810812672A CN108852504B CN 108852504 B CN108852504 B CN 108852504B CN 201810812672 A CN201810812672 A CN 201810812672A CN 108852504 B CN108852504 B CN 108852504B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 39
- 238000003466 welding Methods 0.000 claims abstract description 34
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 230000005855 radiation Effects 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 230000001225 therapeutic effect Effects 0.000 abstract description 9
- 230000005670 electromagnetic radiation Effects 0.000 description 5
- 238000000554 physical therapy Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
Abstract
The invention relates to a radio frequency electrode, a radio frequency therapeutic apparatus and an output transmission line thereof. The radio frequency electrode is composed of a first output electrode and a second output electrode to form a pair of radio frequency output electrodes. The output transmission line comprises two symmetrical coaxial cables which are connected between the radio frequency therapeutic instrument and the pair of radio frequency output electrodes in parallel, and at least one section of welding joint formed by welding shielding layers of the two coaxial cables is arranged on the output transmission line. The pair of radio frequency output electrodes are respectively and electrically connected with the same tail end of the two symmetrical coaxial cables, the phases of radio frequency voltages between the inner sides of the two output electrodes are opposite, an inner insulating layer is arranged, and capacitive coupling output is respectively formed on two sides of a therapeutic object. The radio frequency therapeutic apparatus outputs radio frequency power to the therapeutic object through the radio frequency electrode connected to the radio frequency device. The invention has simple structure and low cost, and effectively reduces the intensity of radio frequency radiation.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a radio frequency electrode, radio frequency treatment equipment and an output transmission line thereof.
Background
The RF electrode of RF physical therapeutic equipment and its output transmission line need to transmit RF power to the RF electrode through the output transmission line, and transmit high-frequency current to human tissue through the electrode and through human skin, so as to achieve therapeutic purpose. The conventional rf electrodes of the rf physiotherapy device and the output transmission lines thereof have no consideration of the influence of electromagnetic radiation on the outside, and basically have a structure in which one coaxial cable transmits rf power to both electrodes, and a shielding layer of the coaxial cable flows rf current over the entire length of the cable. In the radio frequency power transmission mode of the structure, the shielding layer of the coaxial cable is equivalent to an antenna, so that the electromagnetic radiation is strong to the outside, the interference to the outside is large, the loss of radio frequency output power is large, and the output efficiency is low.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the radio frequency electrode solves the problems that the existing radio frequency electrode is strong in external electromagnetic radiation, large in external interference, large in radio frequency output power loss and low in output efficiency.
Yet another technical problem to be solved by the present invention is: the radio frequency treatment equipment solves the problems of strong external electromagnetic radiation, large external interference, large radio frequency output power loss and lower output efficiency of the existing radio frequency treatment equipment.
The invention aims to solve the other technical problems that: the output transmission line solves the problems that an existing radio frequency electrode is strong in external electromagnetic radiation, large in external interference, large in radio frequency output power loss and low in output efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
a radio frequency electrode comprises a pair of radio frequency output electrodes and an output transmission line; the output transmission line comprises two coaxial cables; the pair of radio frequency output electrodes comprise a first output electrode and a second output electrode which are respectively and electrically connected with the tail ends of the same side of the two coaxial cables; the inner side of the two electrodes is provided with an inner side insulating layer; the first output electrode and the second output electrode output radio frequency power in a capacitive coupling manner.
The inner sides of the first output electrode and the second output electrode are configured to output radio frequency power in opposite phases of radio frequency voltage; the first output polar plate and the second output polar plate are respectively formed with the capacitive coupling through the inner insulating layer; the inner side surface of the first output polar plate is provided with the inner side insulating layer, and the inner side surface of the second output polar plate is also provided with the inner side insulating layer.
The first output electrode comprises a first electrode plate pair, wherein the first electrode plate pair comprises a first reference potential electrode plate and a first output electrode plate which are electrically connected to the tail end of one of the two coaxial cables; the second output electrode comprises a second electrode plate pair, and the second electrode plate pair comprises a second reference potential electrode plate and a second output electrode plate which are electrically connected to the tail end of the other coaxial cable of the two coaxial cables; the first output polar plate and the second output polar plate are positioned at the inner side relative to the first reference potential polar plate and the second reference potential polar plate; an inter-plate insulating layer is arranged between the first reference potential plate and the first output plate; an inter-plate insulating layer is also arranged between the second reference potential plate and the second output plate.
The first reference potential polar plate, the inter-polar plate insulating layer and the first output polar plate form a capacitor, and the second reference potential polar plate, the inter-polar plate insulating layer and the second output polar plate form a capacitor so as to prevent the radiation of radio frequency energy to the space when the first output polar plate and the second output polar plate output radio frequency power; when the radio frequency electrode outputs radio frequency power, the phases of the radio frequency voltages are opposite between the first reference potential polar plate and the first output polar plate, and the phases of the radio frequency voltages are opposite between the second reference potential polar plate and the second output polar plate.
The first output electrode comprises an outer insulating layer, a first reference potential polar plate, an inter-polar plate insulating layer, a first output polar plate and an inner insulating layer, and all the layers are sequentially laminated to form the first output electrode; the second output electrode comprises an outer insulating layer, a second reference potential polar plate, an inter-polar plate insulating layer, a second output polar plate and an inner insulating layer, and all the layers are sequentially laminated to form the second output electrode.
At least one section of the two coaxial cables is welded at a welding joint formed by welding shielding layers of the two coaxial cables together.
The welding joint is formed by stripping the insulating sheaths of the coaxial cables from the two coaxial cables to weld and connect the shielding layers; the position of the welding joint is closer to the radio frequency output electrode than the radio frequency instrument; the two coaxial cables are arranged side by side and close to each other; the two coaxial cables form a pair of symmetrical coaxial cables.
A connecting structure is arranged between the welding connection position and the radio frequency instrument on the output transmission line, and the connecting structure tightens and fixes the two coaxial cables together; or the two coaxial cables are welded together from the welding connection to corresponding spot welding of the shielding layer between the radio frequency instruments.
The connecting structure is an outer sleeve or a buckle; the lengths of the two coaxial cables are one quarter of the transmission electromagnetic wavelength in the cables.
The radio frequency therapeutic equipment comprises a radio frequency instrument and also comprises the radio frequency electrode; the radio frequency electrode is connected with the radio frequency instrument to output radio frequency power.
The radio frequency treatment equipment further comprises a radio frequency module and a balance output matching circuit, and the radio frequency module and the output transmission line are electrically connected with the balance output matching circuit; the balanced output matching circuit is configured between the two output polar plates to output radio frequency in a mode that the phases of radio frequency voltages are opposite.
An output transmission line comprises two coaxial cables; the two coaxial cables are connected between the radio frequency instrument and the pair of radio frequency output electrodes in parallel, and at least one section of welding connection formed by welding shielding layers of the two coaxial cables is arranged on the output transmission line.
A connecting structure is arranged between the welding connection position and the radio frequency instrument on the output transmission line, and the connecting structure tightens and fixes the two coaxial cables together; or the two coaxial cables are welded together from the welding connection to corresponding spot welding of the shielding layer between the radio frequency instruments.
The connecting structure is an outer sleeve or a buckle; the two coaxial cables are arranged side by side and close to each other; the two coaxial cables form a symmetrical coaxial cable; the welding joint is formed by stripping the insulating sheaths of the coaxial cables from the two coaxial cables to weld and connect the shielding layers; the position of the welding joint is closer to the radio frequency output electrode than the radio frequency instrument; the lengths of the two coaxial cables are one quarter of the transmission electromagnetic wavelength in the cables.
The beneficial effects of the invention are as follows:
the invention has simple structure, is applied to the radio frequency treatment equipment, greatly reduces the intensity of radio frequency radiation under the condition of improving the radio frequency output efficiency to human tissues, and obviously improves the electromagnetic compatibility of the equipment under the condition of low cost.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of an rf electrode according to an embodiment of the present invention in an operating state.
Fig. 2 is a perspective view of a radio frequency treatment apparatus according to an embodiment of the present invention.
Detailed Description
It should be noted that, without conflict, the embodiments and features of the embodiments in the present application may be combined with each other, and the present invention will be further described in detail with reference to the drawings and the specific embodiments.
The present invention proposes a new technical solution for the defects of the rf electrode and the output transmission line of the conventional rf physical therapy device, and referring to fig. 1-2, the rf therapy device 100 provided by the present invention includes an rf instrument 14 and an rf electrode 20. The rf device 14 is available in the prior art as various types of rf physiotherapy equipment for generating rf for physiotherapy, and the specific structure and function thereof are not described herein.
The RF electrode 20 extends outwardly from the RF device 14 to deliver RF power to the subject 6, and includes an output transmission line coupled to the RF device 14 and a pair of RF output electrodes 21, 22. The output transmission line comprises two coaxial cables 16, 17, preferably a pair of symmetrical coaxial cables 16, 17. The pair of rf output electrodes 21, 22 includes a pair of pole plate pairs 24, 25, respectively.
Two pairs of plates 24, 25 of radio-frequency electrodes, namely a first plate pair 24 and a second plate pair 25, respectively connected to the ends of the coaxial cable pairs 16, 17, each pair of plates comprising a reference potential plate of the output electrode and its opposite output plate, the first plate pair 24 comprising a first reference potential plate 2 and a first output plate 4, respectively; the second plate pair 25 comprises a second reference potential plate 10 and a second output plate 8.
In the working state, the first output polar plate 4 and the second output polar plate 8 are symmetrically arranged and are positioned at the inner side relative to the first reference potential polar plate 2 and the second reference potential polar plate 10. Two pairs of pole plates 24, 25 are disposed on either side of the subject 6. The shape of the reference potential plate and the output plate in the plate pair corresponds to the surface of the object 6.
The symmetrical coaxial cable pairs 16 and 17 are used as balanced output transmission lines to transmit radio frequency power to the therapeutic object 6, and the terminal ends of the pair of symmetrical pair of electrode plates 24 and 25 are respectively connected with the two symmetrical pair of radio frequency electrodes. Insulating layers are arranged in each pole plate pair and on the two sides of each pole plate pair to jointly form an output electrode. Specifically, the first output electrode 21 is formed by stacking a reference potential electrode plate 2, an output electrode plate 4, an outer insulating layer 1, an inter-electrode insulating layer 3, and an inner insulating layer 5. The outer insulating layer 1 is disposed outside the reference potential polar plate 2 and covers the outer surface of the reference potential polar plate 2 in parallel. The inter-polar plate insulating layer 3 is clamped between the reference potential polar plate 2 and the output polar plate 4, and the reference potential polar plate 2 and the output polar plate 4 are completely insulated after lamination. The inner insulating layer 5 is provided on the inner surface of the output plate 4 and covers the same completely, and contacts the object 6 in use.
The second output electrode 22 includes a reference potential electrode plate 10, an output electrode plate 8, an outer insulating layer 11, an inter-electrode insulating layer 9, and an inner insulating layer 7. Wherein the outer insulating layer 11 is disposed outside the reference potential polar plate 10 and covers the outer surface of the reference potential polar plate 10 in parallel. The inter-plate insulating layer 9 is sandwiched between the reference potential plate 10 and the output plate 8, and after lamination, the reference potential plate 10 and the output plate 8 are completely insulated. The inner insulating layer 7 is provided on the inner surface of the output plate 8 and covers the same completely, and contacts the object 6 in use.
In the working state, the first reference potential polar plate 2, the inter-polar plate insulating layer 3 and the first output polar plate 4 form a capacitor, and the second reference potential polar plate 10, the inter-polar plate insulating layer 9 and the second output polar plate 8 form a capacitor, so that the radiation of radio frequency energy to the space when the first output polar plate 21 and the second output polar plate 22 output radio frequency power is effectively prevented.
The first output electrode 21 and the second output electrode 22 are shaped to fit the subject 6 to facilitate the fitting of the skin surface of the subject during treatment. If the treatment target is a knee, the layers of the first output electrode 21 and the second output electrode 22 are laminated to form a square pad, but other shapes may be used.
In the use process, the first output polar plate 4 and the second output polar plate 8 are symmetrically arranged, and the two are used for carrying out capacitive coupling to the human tissue object 6 through the inner insulating layers 5 and 7 to output radio frequency power. The radio frequency voltages between the symmetrical output plates 4 and 8 are set to be in opposite phase, where the radio frequency voltages between the first reference potential plate 2 and the first output plate 4 are in opposite phase and the radio frequency voltages between the second reference potential plate 8 and the second output plate 10 are in opposite phase.
The symmetrical coaxial cable pairs 16, 17 are arranged side by side in parallel and have a length to serve as balanced output transmission lines connecting the radio frequency symmetrical electrodes 21, 22. Specifically, the pair of coaxial cables 16, 17 extend in parallel side-by-side, side-by-side relation, with both ends electrically connected to the output of the radiofrequency meter 14 and to the first and second output electrodes 21, 22, respectively.
The coaxial cable pair 16, 17 is stripped of the insulating sheath of the coaxial cable at the position close to the electrode plate pair 24, 25 of the radio frequency electrode, the shielding layers of the coaxial cable pair are welded and connected to form the coaxial cable welding position 12, and then the part of the coaxial cable pair between the welding position 12 and the output end of the radio frequency instrument 14 is fixed and fastened together by a heat shrinkage sleeve 13, or the corresponding points of the shielding layers of the coaxial cable pair 16, 17 between the welding position 12 and the output end of the radio frequency instrument are welded and connected together, as a result, the back and forth radio frequency current between the shielding layers of the coaxial cable pair 16, 17 from the welding position 12 and the output end 18 of the radio frequency instrument is offset by the equal and opposite phases, namely, the radio frequency current flowing through the shielding layers of the coaxial cable pair 16, 17 for the most of the whole length is basically zero, so that the radio frequency radiation of the radio frequency electrode (specifically, the first reference potential electrode plate 2, the first output electrode plate 4, the second reference electrode plate 10, the second output electrode plate 8) and the radio frequency transmission line 16, 17 is greatly reduced. The rf treatment device 14 includes a metal shielding case 19, and a balanced output matching circuit 15 and an rf module (not shown) are disposed in the metal shielding case 19. The radio frequency module and the radio frequency electrode output transmission lines 16 and 17 are electrically connected with the balance output matching circuit 15. The function of the balanced output matching circuit 15 is to set the opposite phases of the rf voltages between the symmetrical output plates 4 and 8, and the opposite phases of the rf voltages between the first reference potential plate 2 and the first output plate 4, and the opposite phases of the rf voltages between the second reference potential plate 8 and the second output plate 10, and the above-mentioned functions of the balanced output matching circuit 15 can be implemented by using a circuit of the prior art. The radio frequency module is a module in the prior art and is used for generating radio frequency.
As an example, the output frequency of the rf meter 14 is 40.68MHz, the output power is 60W, the rf power is transmitted using a symmetrical pair of coaxial cables 16, 17 as the output transmission line, and the coaxial cable 16 connecting the first output electrode 21 and the coaxial cable 17 connecting the second output electrode 22 has a cable length of about one quarter of the wavelength of the electromagnetic transmitted in the cable, for example, about 127cm. The coaxial cable pairs 16 and 17 are respectively connected with the pole plate pairs 24 and 25 (the first reference potential pole plate 2 and the output pole plate 4, the second reference potential pole plate 10 and the output pole plate 8) of the radio frequency electrodes with symmetrical structures at the tail ends, and the first output electrode 21 consists of the reference potential pole plate 2, the output pole plate 4, the outer insulating layer 1, the inter-pole insulating layer 3 and the inner insulating layer 5. The second output electrode 22 is composed of a reference potential polar plate 10, an output polar plate 8, an outer insulating layer 11, an inter-polar plate insulating layer 9 and an inner insulating layer 7.
The outer insulating layer 1, the first reference potential electrode plate 2, the inter-electrode insulating layer 3, the first output electrode plate 4 and the inner insulating layer 5 are sequentially laminated to form the first output electrode 21. The outer insulating layer 11, the second reference potential electrode plate 10, the inter-electrode insulating layer 9, the second output electrode plate 8, and the inner insulating layer 7 are laminated in this order to form the second output electrode 22.
The radio frequency power is capacitively coupled between the symmetrical output plates 4 and 8 through the inner insulation layers 5, 7 to the human tissue treatment object 6, the shielding layer of the pair of coaxial cables is welded and connected by stripping the insulation sheath of the coaxial cables at a position (for example, a distance of about 25cm from the pair of radio frequency electrodes) close to the electrodes and meeting the operation convenience requirement at the position of the pair of symmetrical coaxial cables, namely, about one quarter of the electromagnetic wavelength transmitted in the cables, and by using a balanced output matching circuit 15 in the radiofrequency meter 14 so that the phases of the radio frequency voltages between the symmetrical output plates 4 and 8 are opposite (at the moment, the phases of the radio frequency voltages between the first reference potential plate 2 and the first output plate 4 are opposite, and the phases of the radio frequency voltages between the second reference potential plate 8 and the second output plate 10 are opposite), and then the pair of coaxial cables is fastened and held together by a heat shrink sleeve 13 at a distance (for example, a distance of about 20 cm) from the welded and connected position of the pair of the coaxial cables between the pair of electrodes and the output end 18 of the radiofrequency treatment device. The whole instrument can meet the requirements of YY0505-2012 standard under the condition of meeting the output characteristic. It will be appreciated that the heat shrink 13 may also be a snap or other connection structure to secure the two coaxial cables together.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (11)
1. A radio frequency electrode comprises a pair of radio frequency output electrodes and an output transmission line; the method is characterized in that: the output transmission line comprises two coaxial cables; the pair of radio frequency output electrodes comprise a first output electrode and a second output electrode which are respectively and electrically connected with the tail ends of the same side of the two coaxial cables; the inner sides of the first output electrode and the second output electrode are provided with inner side insulating layers; the first output electrode and the second output electrode output radio frequency power in a capacitive coupling mode;
the inner sides of the first output electrode and the second output electrode are configured to output radio frequency power in opposite phases of radio frequency voltage; the first output polar plate and the second output polar plate are respectively formed with the capacitive coupling through the inner insulating layer; the inner side surface of the first output polar plate is provided with the inner side insulating layer, and the inner side surface of the second output polar plate is also provided with the inner side insulating layer;
the first output electrode comprises a first electrode plate pair, wherein the first electrode plate pair comprises a first reference potential electrode plate and a first output electrode plate which are electrically connected to the tail end of one of the two coaxial cables; the second output electrode comprises a second electrode plate pair, and the second electrode plate pair comprises a second reference potential electrode plate and a second output electrode plate which are electrically connected to the tail end of the other coaxial cable of the two coaxial cables; the first output polar plate and the second output polar plate are positioned at the inner side relative to the first reference potential polar plate and the second reference potential polar plate; an inter-plate insulating layer is arranged between the first reference potential plate and the first output plate; an inter-plate insulating layer is also arranged between the second reference potential plate and the second output plate;
the first reference potential polar plate, the inter-polar plate insulating layer and the first output polar plate form a capacitor, and the second reference potential polar plate, the inter-polar plate insulating layer and the second output polar plate form a capacitor so as to prevent the radiation of radio frequency energy to the space when the first output polar plate and the second output polar plate output radio frequency power; when the radio frequency electrode outputs radio frequency power, the phases of the radio frequency voltages between the first reference potential polar plate and the first output polar plate are opposite, and the phases of the radio frequency voltages between the second reference potential polar plate and the second output polar plate are opposite;
the radio frequency electrode is used for transmitting radio frequency power to a treatment object; the shapes of the first output electrode and the second output electrode are matched with the treatment object.
2. The radio frequency electrode according to claim 1, wherein: the first output electrode comprises an outer insulating layer, a first reference potential polar plate, an inter-polar plate insulating layer, a first output polar plate and an inner insulating layer, and all the layers are sequentially laminated to form the first output electrode; the second output electrode comprises an outer insulating layer, a second reference potential polar plate, an inter-polar plate insulating layer, a second output polar plate and an inner insulating layer, and all the layers are sequentially laminated to form the second output electrode.
3. The radio frequency electrode according to any one of claims 1-2, wherein: at least one section of the two coaxial cables is a welding joint formed by welding shielding layers of the two coaxial cables together.
4. A radio frequency electrode according to claim 3, wherein: the welding joint is formed by stripping the insulating sheaths of the coaxial cables from the two coaxial cables to weld and connect the shielding layers; the position of the welding joint is closer to the radio frequency output electrode than the radio frequency instrument; the two coaxial cables are arranged side by side and close to each other; the two coaxial cables form a pair of symmetrical coaxial cables.
5. The radio frequency electrode according to claim 4, wherein: a connecting structure is arranged between the welding connection position and the radio frequency instrument on the output transmission line, and the connecting structure tightens and fixes the two coaxial cables together; or the two coaxial cables are welded together from the welding connection to corresponding spot welding of the shielding layer between the radio frequency instruments.
6. The radio frequency electrode according to claim 5, wherein: the connecting structure is an outer sleeve or a buckle; the lengths of the two coaxial cables are one quarter of the transmission electromagnetic wavelength in the cables.
7. A radio frequency treatment device comprising a radio frequency apparatus, further comprising a radio frequency electrode as claimed in any one of claims 1 to 6; the radio frequency electrode is connected with the radio frequency instrument to output radio frequency power.
8. The radio frequency treatment apparatus according to claim 7, wherein: the radio frequency treatment equipment further comprises a radio frequency module and a balance output matching circuit, and the radio frequency module and the output transmission line are electrically connected with the balance output matching circuit; the balanced output matching circuit is configured between the two output polar plates to output radio frequency in a mode that the phases of radio frequency voltages are opposite.
9. An output transmission line comprises two coaxial cables; the method is characterized in that: the two coaxial cables are connected between the radio frequency instrument and the pair of radio frequency output electrodes according to any one of claims 1-6 in parallel, and at least one section of the output transmission line is a welding joint formed by welding shielding layers of the two coaxial cables together.
10. The output transmission line of claim 9, wherein: a connecting structure is arranged between the welding connection position and the radio frequency instrument on the output transmission line, and the connecting structure tightens and fixes the two coaxial cables together; or the two coaxial cables are welded together from the welding connection to corresponding spot welding of the shielding layer between the radio frequency instruments.
11. The output transmission line of claim 10, wherein: the connecting structure is an outer sleeve or a buckle; the two coaxial cables are arranged side by side and close to each other; the two coaxial cables form a symmetrical coaxial cable; the welding joint is formed by stripping the insulating sheaths of the coaxial cables from the two coaxial cables to weld and connect the shielding layers; the position of the welding joint is closer to the radio frequency output electrode than the radio frequency instrument; the lengths of the two coaxial cables are one quarter of the transmission electromagnetic wavelength in the cables.
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| CN201810812672.0A CN108852504B (en) | 2018-07-23 | 2018-07-23 | Radio frequency electrode, radio frequency treatment equipment and output transmission line thereof |
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| CN201810812672.0A CN108852504B (en) | 2018-07-23 | 2018-07-23 | Radio frequency electrode, radio frequency treatment equipment and output transmission line thereof |
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